package cn.tedu.egvehicle.base.filters;

import cn.tedu.egvehicle.pojo.vo.UserVO;
import lombok.extern.slf4j.Slf4j;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@Slf4j
@WebFilter(filterName = "LoginCheckFilter",urlPatterns = "/v1/vehicle/*")
public class LoginCheckFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        Filter.super.init(filterConfig);
    }

    @Override
    public void destroy() {
        Filter.super.destroy();
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        log.debug("正在使用过滤器进行登录状态的校验");
        HttpServletRequest request =(HttpServletRequest) servletRequest;
        HttpServletResponse response =(HttpServletResponse) servletResponse;
        //获取会话
        HttpSession session = request.getSession();
        UserVO userVO =(UserVO) session.getAttribute("user");
        if(userVO != null){
            //放行
            filterChain.doFilter(request,response);
        }else {
            //重定向登录页面
            response.sendRedirect("login.html");
        }
    }
}
